From 6668ed271eaefaa63e686bdfbedaeb7b8e492722 Mon Sep 17 00:00:00 2001 From: Kumar Kartikeya Dwivedi Date: Fri, 4 Sep 2026 10:43:19 +0200 Subject: selftests/bpf: Reject graph kptr use after RCU unlock Add a sleepable verifier test that loads a graph-node local kptr in an explicit RCU read-side critical section, then passes its node to bpf_rbtree_remove() after the section ends. Before the verifier fix, the stale NON_OWN_REF flag makes the node look like a live borrowed reference and the program is accepted. After the fix, the pointer is demoted without NON_OWN_REF and the graph kfunc argument is rejected. Also exercise a graph kptr loaded while a spin lock provides implicit RCU protection. The pointer must be invalidated when the lock is released, which guards the required ordering between non-owning-reference invalidation and RCU demotion. Update the existing fault-protected load test state description. The post-unlock pointer no longer carries NON_OWN_REF, but remains readable because the load is rewritten to use BPF_PROBE_MEM. Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20260904084325.52250-7-memxor@gmail.com Signed-off-by: Alexei Starovoitov --- drivers/soc/Makefile | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 drivers/soc/Makefile (limited to 'drivers/soc/Makefile') diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile new file mode 100644 index 000000000..c9e689080 --- /dev/null +++ b/drivers/soc/Makefile @@ -0,0 +1,39 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for the Linux Kernel SOC specific device drivers. +# + +obj-y += apple/ +obj-y += aspeed/ +obj-$(CONFIG_ARCH_AT91) += atmel/ +obj-y += bcm/ +obj-$(CONFIG_ARCH_CANAAN) += canaan/ +obj-$(CONFIG_EP93XX_SOC) += cirrus/ +obj-$(CONFIG_ARCH_DOVE) += dove/ +obj-$(CONFIG_MACH_DOVE) += dove/ +obj-y += fsl/ +obj-y += fujitsu/ +obj-$(CONFIG_ARCH_GEMINI) += gemini/ +obj-y += hisilicon/ +obj-y += imx/ +obj-y += ixp4xx/ +obj-$(CONFIG_SOC_XWAY) += lantiq/ +obj-$(CONFIG_LITEX_SOC_CONTROLLER) += litex/ +obj-y += loongson/ +obj-y += mediatek/ +obj-y += microchip/ +obj-y += nuvoton/ +obj-y += pxa/ +obj-y += amlogic/ +obj-y += qcom/ +obj-y += renesas/ +obj-y += rockchip/ +obj-$(CONFIG_SOC_SAMSUNG) += samsung/ +obj-y += sophgo/ +obj-y += sunxi/ +obj-$(CONFIG_ARCH_TEGRA) += tegra/ +obj-y += ti/ +obj-$(CONFIG_ARCH_U8500) += ux500/ +obj-y += versatile/ +obj-y += vt8500/ +obj-y += xilinx/ -- cgit v1.3.1